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| author | Andrew Waterman <andrew@sifive.com> | 2019-12-16 17:41:56 -0800 |
|---|---|---|
| committer | Andrew Waterman <andrew@sifive.com> | 2019-12-16 17:42:57 -0800 |
| commit | e0339fc0775e0e8d478462ce3ed055ccde33f76a (patch) | |
| tree | 359da78d448d3b3ec258c2a9cab49390e672849a | |
| parent | 99eb76ac3c19eb3ebc6c2f91c4bfb85baf187cd0 (diff) | |
| download | env-e0339fc0775e0e8d478462ce3ed055ccde33f76a.zip env-e0339fc0775e0e8d478462ce3ed055ccde33f76a.tar.gz env-e0339fc0775e0e8d478462ce3ed055ccde33f76a.tar.bz2 | |
Initialize all the x-registers for determinism
This isn't required for correctness, but it helps debugging (and, in a few
restricted scenarios, it avoids x-prop issues).
Closes #16
| -rw-r--r-- | v/entry.S | 32 |
1 files changed, 32 insertions, 0 deletions
@@ -28,6 +28,38 @@ trap_vector: j wtf handle_reset: + li x1, 0 + li x2, 0 + li x3, 0 + li x4, 0 + li x5, 0 + li x6, 0 + li x7, 0 + li x8, 0 + li x9, 0 + li x10, 0 + li x11, 0 + li x12, 0 + li x13, 0 + li x14, 0 + li x15, 0 + li x16, 0 + li x17, 0 + li x18, 0 + li x19, 0 + li x20, 0 + li x21, 0 + li x22, 0 + li x23, 0 + li x24, 0 + li x25, 0 + li x26, 0 + li x27, 0 + li x28, 0 + li x29, 0 + li x30, 0 + li x31, 0 + la t0, trap_vector csrw mtvec, t0 la sp, STACK_TOP - SIZEOF_TRAPFRAME_T |